Tanya CHAN is currently a practising barrister. She was one of the founding members of the Civic Party in 2006 and joined The Professional Commons in 2007. Tanya actively participated in party development; she was the Chairman of Young Civics, the Chairman of Hong Kong Island Branch and the Convenor of Hong Kong Island Branch. She also participated in the Constitution and Governance Branch, Environment and Sustainable Development Branch and Community and Social Development Branch etc.

Tanya has been representing the Civic Party to stand in multiple elections, including the District Council, the Election Committee (Legal) and the Legislative Council.